GB1152013A - Improvements in Method and Apparatus for Determining the Volumetric Mass or Density of a Gas - Google Patents

Improvements in Method and Apparatus for Determining the Volumetric Mass or Density of a Gas

Info

Publication number
GB1152013A
GB1152013A GB5372266A GB5372266A GB1152013A GB 1152013 A GB1152013 A GB 1152013A GB 5372266 A GB5372266 A GB 5372266A GB 5372266 A GB5372266 A GB 5372266A GB 1152013 A GB1152013 A GB 1152013A
Authority
GB
United Kingdom
Prior art keywords
density
gas
temperature
functions
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5372266A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB1152013A publication Critical patent/GB1152013A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/57—Analogue computers for specific processes, systems or devices, e.g. simulators for fluid flow ; for distribution networks

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

1,152,013. Measuring density of a gas electrically. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. Nov.30, 1966 [Dec.8, 1965], No.53722/66. Heading G1N. [Also in Division G4] The density of a gas in the region of its critical temperature is determined using the equation X = k(P) - F1(P). F2(T) where X is given by X =m/m o P o /T o , M being the required density at temperature T and pressure P, and m o being the density at temperature T o and pressure P o . The functions k(P), F1(P and F2(T) are determined experimentally and are functions of the actual compressibility of the gas near its critical point. In the embodiment, the output signals from pressure and temperature measuring devices 1, 2 Figs.6, 7 (latter not shown), are fed respectively via amplifiers 3, 4 to function generators 5, 6, 7 (see also Division G4) in which the functions F2(T), F1(P) and k(P) are generated. The outputs of generators 5, 6 are then multiplied in a multiplier 8, whose output has the form F2(T), F1(P), and is fed to an amplifier 9 where it is combined with the output from the generator 7. The output from amplifier 9, is therefore a signal proportional to the required density. The above computing circuitry may also be used in the determination of the flow-rate of a gas in the region of its control temperature, as described in Specification 1,150,360.
GB5372266A 1965-12-08 1966-11-30 Improvements in Method and Apparatus for Determining the Volumetric Mass or Density of a Gas Expired GB1152013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR41358A FR1467112A (en) 1965-12-08 1965-12-08 Improvements to methods and devices for determining the density of a gas

Publications (1)

Publication Number Publication Date
GB1152013A true GB1152013A (en) 1969-05-14

Family

ID=8594753

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5372266A Expired GB1152013A (en) 1965-12-08 1966-11-30 Improvements in Method and Apparatus for Determining the Volumetric Mass or Density of a Gas

Country Status (6)

Country Link
BE (1) BE690670A (en)
DE (1) DE1548929A1 (en)
FR (1) FR1467112A (en)
GB (1) GB1152013A (en)
LU (1) LU52507A1 (en)
NL (1) NL6617178A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH616743A5 (en) * 1977-07-01 1980-04-15 Bbc Brown Boveri & Cie Device for measuring the density of gaseous media.
US4390956A (en) * 1981-03-06 1983-06-28 The Singer Company Apparatus for correcting measured gas flow

Also Published As

Publication number Publication date
BE690670A (en) 1967-06-05
NL6617178A (en) 1967-06-09
FR1467112A (en) 1967-01-27
LU52507A1 (en) 1967-02-07
DE1548929A1 (en) 1970-04-23

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees